Imports System.Data.SqlClient
Public Class frmpassword
    Inherits System.Windows.Forms.Form
    Dim blnclose As Boolean
    Dim struserid As String

#Region " Windows 窗體設(shè)計器生成的代碼 "

    Public Sub New()
        MyBase.New()

        '該調(diào)用是 Windows 窗體設(shè)計器所必需的。
        InitializeComponent()

        '在 InitializeComponent() 調(diào)用之后添加任何初始化

    End Sub

    '窗體重寫 dispose 以清理組件列表。
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    End Sub

    'Windows 窗體設(shè)計器所必需的
    Private components As System.ComponentModel.IContainer

    '注意: 以下過程是 Windows 窗體設(shè)計器所必需的
    '可以使用 Windows 窗體設(shè)計器修改此過程。
    '不要使用代碼編輯器修改它。
    Friend WithEvents Label1 As System.Windows.Forms.Label
    Friend WithEvents Label2 As System.Windows.Forms.Label
    Friend WithEvents PictureBox1 As System.Windows.Forms.PictureBox
    Friend WithEvents btnok As System.Windows.Forms.Button
    Friend WithEvents btncancle As System.Windows.Forms.Button
    Friend WithEvents txtuserid As System.Windows.Forms.TextBox
    Friend WithEvents txtpassword As System.Windows.Forms.TextBox
    Friend WithEvents SqlConnection1 As System.Data.SqlClient.SqlConnection
    Friend WithEvents SqlCommand1 As System.Data.SqlClient.SqlCommand
    Friend WithEvents SqlCommand2 As System.Data.SqlClient.SqlCommand
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Dim resources As System.Resources.ResourceManager = New System.Resources.ResourceManager(GetType(frmpassword))
        Me.Label1 = New System.Windows.Forms.Label
        Me.Label2 = New System.Windows.Forms.Label
        Me.txtuserid = New System.Windows.Forms.TextBox
        Me.txtpassword = New System.Windows.Forms.TextBox
        Me.PictureBox1 = New System.Windows.Forms.PictureBox
        Me.btnok = New System.Windows.Forms.Button
        Me.btncancle = New System.Windows.Forms.Button
        Me.SqlConnection1 = New System.Data.SqlClient.SqlConnection
        Me.SqlCommand1 = New System.Data.SqlClient.SqlCommand
        Me.SqlCommand2 = New System.Data.SqlClient.SqlCommand
        Me.SuspendLayout()
        '
        'Label1
        '
        Me.Label1.Font = New System.Drawing.Font("宋體", 10.5!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Label1.Location = New System.Drawing.Point(80, 40)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(64, 23)
        Me.Label1.TabIndex = 0
        Me.Label1.Text = "用戶名："
        '
        'Label2
        '
        Me.Label2.Font = New System.Drawing.Font("宋體", 10.5!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Label2.Location = New System.Drawing.Point(80, 104)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(56, 23)
        Me.Label2.TabIndex = 1
        Me.Label2.Text = "密 碼："
        '
        'txtuserid
        '
        Me.txtuserid.Location = New System.Drawing.Point(144, 40)
        Me.txtuserid.Name = "txtuserid"
        Me.txtuserid.Size = New System.Drawing.Size(112, 21)
        Me.txtuserid.TabIndex = 2
        Me.txtuserid.Text = ""
        '
        'txtpassword
        '
        Me.txtpassword.Location = New System.Drawing.Point(144, 104)
        Me.txtpassword.Name = "txtpassword"
        Me.txtpassword.PasswordChar = Microsoft.VisualBasic.ChrW(42)
        Me.txtpassword.Size = New System.Drawing.Size(112, 21)
        Me.txtpassword.TabIndex = 3
        Me.txtpassword.Text = ""
        '
        'PictureBox1
        '
        Me.PictureBox1.Image = CType(resources.GetObject("PictureBox1.Image"), System.Drawing.Image)
        Me.PictureBox1.Location = New System.Drawing.Point(8, 8)
        Me.PictureBox1.Name = "PictureBox1"
        Me.PictureBox1.Size = New System.Drawing.Size(64, 128)
        Me.PictureBox1.TabIndex = 4
        Me.PictureBox1.TabStop = False
        '
        'btnok
        '
        Me.btnok.Location = New System.Drawing.Point(96, 144)
        Me.btnok.Name = "btnok"
        Me.btnok.Size = New System.Drawing.Size(56, 23)
        Me.btnok.TabIndex = 5
        Me.btnok.Text = "確定"
        '
        'btncancle
        '
        Me.btncancle.Location = New System.Drawing.Point(176, 144)
        Me.btncancle.Name = "btncancle"
        Me.btncancle.Size = New System.Drawing.Size(56, 23)
        Me.btncancle.TabIndex = 6
        Me.btncancle.Text = "取消"
        '
        'SqlConnection1
        '
        Me.SqlConnection1.ConnectionString = "workstation id=4D3A93FBF8BE4E6;packet size=4096;user id=sa;data source=4D3A93FBF8" & _
        "BE4E6;persist security info=False;initial catalog=sqlqtgl"
        '
        'SqlCommand1
        '
        Me.SqlCommand1.Connection = Me.SqlConnection1
        '
        'frmpassword
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(360, 198)
        Me.Controls.Add(Me.btncancle)
        Me.Controls.Add(Me.btnok)
        Me.Controls.Add(Me.PictureBox1)
        Me.Controls.Add(Me.txtpassword)
        Me.Controls.Add(Me.txtuserid)
        Me.Controls.Add(Me.Label2)
        Me.Controls.Add(Me.Label1)
        Me.Name = "frmpassword"
        Me.Text = "用戶登錄"
        Me.ResumeLayout(False)

    End Sub

#End Region
    Public Property MyUser() As String
        Get
            MyUser = struserid
        End Get
        Set(ByVal Value As String)
            struserid = Value
        End Set
    End Property

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        blnclose = True
    End Sub

    Private Sub Form1_Closing(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles MyBase.Closing
        e.Cancel = Not blnclose
    End Sub

    Private Sub btnok_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnok.Click
        SqlCommand1.CommandText = "select 用戶名 from 用戶 where 用戶名='" & txtuserid.Text & "'and 密碼='" & txtpassword.Text & "'"
        SqlConnection1.Open()
        struserid = CType(SqlCommand1.ExecuteScalar(), String)
        If struserid = "" Then
            MessageBox.Show("用戶名或密碼錯誤!", "身份人證失敗", MessageBoxButtons.OK, MessageBoxIcon.Error)
            blnclose = False
        Else
            blnclose = True
            struserid = txtuserid.Text
          
        End If
        SqlConnection1.Close()


    End Sub

    Private Sub btncancle_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btncancle.Click
        MyUser = ""
        blnclose = True
        Me.Close()

    End Sub
End Class